城市路网动态交通模型建模及实例应用

Modeling and Application of Dynamic Traffic Model for Urban Road Network

以动态交通运行分析和管理评估为目的,提出城市路网动态交通模型的构建流程,总结四个关键技术问题:动态OD反推、交通流特征参数标定、动态交通分配方式选择和情景参数标定;在此基础上,采用虚拟路网的测试结果直观呈现动态交通模型的主要功能特点;最后,采用INTEGRATION构建北京实际区域路网动态交通模型,评估分析匝道控制方案和事故应对方案的实施效果。

To analyze the traffic dynamic conditions and evaluate traffic management effet, we presented the process of the modeling of urban dynamic traffic network model and summarized four key technical issues which were dynamic OD estimation, calibration of traffic characteristic parameters, dynamic traffic assignment options, and calibration of scenario parameters. On such basis, we visually illustrated the main functions of the model using test results of the virtual networks. Finally, we used INTEGRATION to develop the dynamic traffic model of the traffic network of Beijing and evaluated the effects of ramp metering and accident responding schemes.